import java.util.Scanner;

public class Main6 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double height = scanner.nextDouble();
        double weight = scanner.nextDouble();

        //write your code here......
        double bim=weight/(height*height);
        if(bim<18.5){
            System.out.println("偏瘦");
        } else if (bim<20.9) {
            System.out.println("苗条");
        } else if (bim<=24.9) {
            System.out.println("适中");
        }else{
            System.out.println("偏胖");
        }

    }
}